Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

`
`
gm

Test String

Code Generator

Language

Generated Code

import Foundation let pattern = #"(\\\w\\\w)|(\\[A-Za-z0-9]{5}\b)"# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = ##""" @DethDeelinDale DALE BUB⁉️\n\nU ALRIT⁉️\n\nU NEED BAKUP⁉️ RT @DethDeelinDale: WHO N THE FUK R U #DIKS⁉️\n\nHOLEE FUK‼️ PUT DEM \uD83D\uDD2B AWAY!!!\n\nU kan hav the \uD83D\uDCB0 I dun giv a fuk bout dat!!!\n\nHear u go…jus ta… @DethDeelinDale Waz rong dale⁉️\n\nWaz it a menshall er 1 a em lite \uD83D\uDEAC⁉️\n\nI dun HAYT thoz‼️\n\nNuthin but #MarbReds\uD83D\uDEAC 4 me‼️ WAT N THE FLYIN FUK⁉️\n\nHEY, U DUM B!TCH, PULL UP UR FN \uD83D\uDC56‼️\n\nU KANT NOT FRIGGEN \uD83D\uDCA9 HER‼️\n\nI swar 2 fn God, thez #ratards\uD83E\uDD24 @ friggen @Walmart r gonna dun mayk me looz mi fn mind!!! \uD83E\uDD2C\uD83E\uDD2C https://t.co/xsQg26SWIk WOOD U HUREE THE FUK UP U STUPID LITLE KIDS N GET ON UR GOD DAM SKOOL \uD83D\uDE8C!!! \uD83E\uDD2C\n\nU MOTHAFUKERS R GONNA DUN MAYK ME LAYT AGAN 2 MI JOB #HAWLINKARTS\uD83D\uDED2 @Walmart‼️\n\nThas it! I aint not got Tim 4 this, Im passin thez fn ratards!!! \uD83D\uDCA8\n\nOhhhh fukkkkk... \uD83D\uDEA8\uD83D\uDE94\uD83E\uDD26\uD83C\uDFFB‍♂️\uD83E\uDD26\uD83C\uDFFB‍♂️ WAR N TYE FLYIN FUK M I N WAT HAPND 2 MI FN \uD83D\uDC56!!!??? @DethDeelinDale Wat 4 bub⁉️ U dun need mi #glock \uD83D\uDD2B??? RT @DethDeelinDale: I NEEDA #GAT \uD83D\uDD2B‼️ RT @DethDeelinDale: BOOOOOMMMMM‼️ \n\nDAS WAT I THOT #BALDYBILL \uD83D\uDC68\uD83C\uDFFB‍\uD83E\uDDB2‼️\n\nU cum talkin all dat SHIT 2 me n think u waznt gonna get put 2 fukin… Hapins 2 the best a us! \uD83D\uDC56\uD83D\uDCA9 https://t.co/TVzch1v0du """## let stringRange = NSRange(location: 0, length: testString.utf16.count) let matches = regex.matches(in: testString, range: stringRange) var result: [[String]] = [] for match in matches { var groups: [String] = [] for rangeIndex in 1 ..< match.numberOfRanges { let nsRange = match.range(at: rangeIndex) guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue } let string = (testString as NSString).substring(with: nsRange) groups.append(string) } if !groups.isEmpty { result.append(groups) } } print(result)

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression